1. Member, Nigerian Society of Biochemistry and Molecular Biology (Nigeria)
2. Member, Nigeria Society for Experimental Biology (Nigeria)
3. Member, The Endocrine Society (USA)
4. Member, International Society for Ethnopharmacology (UK)
5. Member, Biochemical Society (UK)
6. Member, Society for Environmental Toxicology and Chemistry (SETAC, Europe)
7. Member, Indian Society for Chemists and Biochemists (India)

4. Okokon JE, Ekpo A, Eseyin OA (2007). Antiplasmodial activity of ethanolic root extract of Telfairia occidentalis. Res J Parasitology 2(2): 94-98.
5. Eseyin OA, Edoho EJ, Igboasoiyi, AC, Nwadiukwu E, Ekpo A(2007).Effects of the leaf extract of Telfairia occidentalis on the pharmacokinetic of chloroquine. Int J Biol Chem. 1(4): 256-260.
6. Igboasoiyi A.C., Essien E.E., Eseyin O.A., and Ubam G. (2007) Screening of the seed of Picralima nitida for Hypoglycaemic activity. Pakistan J. Biol. Sci. 10(5):828-830
7.Igboasoiyi A.C., Eseyin O.A., Nwosu E,, Oladimeji H (2007).Studies on the toxicity of Ageratum conyzoides. J Pharm and Pharmacol 2(8):743-747
8.Olorunfemi A.Eseyin, Patrick Ebong, Arit Ekpo, Arnold Igboasoiyi, Emmanuel Oforah (2007). Hypoglycaemic activity of the seed of Telfairia occidentalis. Pakistan J Biol.Sci.10 (3):498-501
10.Arit Ekpo,Olorunfemi A.Eseyin, Amaku O.Ikpeme and Edoho J Edoho(2007). Studies on some Biochemical effects of Vernonia amygdalina in rats. Asia J. Biochemistry 2(3):193-197.
11.Arit Ekpo, Olorunfemi Eseyin, Ndukwe Kalu,Obot Jackson and E.J.Edoho(2007). Studies on the Biochemical effects of Talinum triangulare in rat. J.Pharmacol and Toxicol.2(3):300-303
12. O.A.Eseyin, I.Udoh,A.Ekpo, E.J.Edoho and A.C.Igboasoiyi.(2007) Biochemical effects of the seed extract of Telfairia occidentalis in rats. Int.J.Pharmacology 3(2):198-200.
13.Olorunfemi A.Eseyin, Arit Ekpo, Iboro Idem and Arnold C.Igboasoiyi (2007) Effect of the fruit of Telfairia occidentalis on some biomolecules in rat. Pakistan J.Biological Sci.10(18):3240-3242
15..Olorunfemi A.Eseyin,Arnold C.Igboasoiyi, Emmanuel Oforah, Nkaima Nkop and Akeem Agboke (2005). Hypoglycaemic activity of Telfairia occidentalis in rats. J. Pharmacy and Bioresources 2(1):36-42
23.E.Oforah and A.Eseyin (2000)Serum Cathepsin activity as a probe of cardiac
necrotic foci during long-term Chlorpromazine administration in rat. Nig. Medical Journal 38(2)46-49
25. Eseyin, O., Ebong, A., Anefiok U and Imoh U.(2011) Effects of the leaf of Lasianthera
Africana on the pharmacokinetics of chloroquine in rats. Journal of Medicinal Plants Research 5 (13): 2665-2669.
26. Ekpo, B., Ajibesin, K., Eseyin, O.A., Danladi, B (2011). Evaluation of Hypoglycaemic activity of Musa paradisiaca (Musaceae) in rat. International Journal of Research in Ayurveda and pharmacy 2(2): 498-501
27. Eseyin, O.A., Awofisayo, O., Etim I., Obot J.(2010) Hematological effect of the aqueous and ethanolic leaf extracts of Musa paradisiacal L. (Musaceae) in rat. African Journal of Animal Biosciences 5(3):115-117.
28. Udobre A., Eseyin, O.A., Iweh, E., Umoh U(2010). Effect of artemisinin alone and artemisinin with folic acid on the lipid profile of male wistar rats. International Journal of Biological and Chemical Sciences 4(6): 2421-2426
29. Eseyin, O., Ebong, A., Attih, E., Imo, U.(2010) Effects of the leaf of Heinsia crinata on the pharmacokinetics of chloroquine in rats. International Journal of Biological and Pharmaceutical Sciences.1 (2): 88-93.
30. Eseyin, O A., Obot S. J, Udobre, A., Akeem A, Oladoja A (2010) Comparative Study Of The Effects Of Aqueous and Ethanolic Leaf Extracts Of Musa paradisiaca L. (Musaceae) on Some Biochemical Parameters in Rat. International Journal of Phytopharmacy Research.1(1): 21-24.
31. Eseyin, O.A., Ebong P., Eyong E., Awofisayo O., Agboke A. (2010) Effect of Telfairia occidentalis on oral glucose tolerance in rats. African Journal of Pharmacy and Pharmacology 4(6): 368-372.
32. Eseyin, OA, Ebong, P., Eyong, E.U., Umoh, E. and Agboke, H. (2010) Hypoglycaemic activity of ethyl acetate fraction of the leaf extract of Telfairia occidentalis. Pak J Pharm Sci vol 23 (3):340-343.
33. Eseyin, O. A., Ebong, P., Eyong, E. U., Umoh, E., Attih, E. (2010) Comparative hypoglycaemic effects of ethanolic and aqueous extracts of the leaf and seed of Telfairia occidentalis. Turkish J Pharm Sci 7(1): 29-34
32. .Eseyin, O., Ebong, A., Anefiok U and Imoh U.(2011) Effects of the leaf of Lasianthera africana on the pharmacokinetics of chloroquine in rats. Journal of Medicinal Plants Research 5(13):2665-2669.
33. Ekpo, B., Ajibesin, K., Eseyin, O.A., Danladi, B (2011) . Evaluation of Hypoglycaemic activity of Musa paradisiaca (Musaceae) in rat. International Journal of Research in Ayurveda and pharmacy 2(2): 498-501.
34. A.S. Udobre, O.A. Eseyin, U. E. Osonwa, A. E. Udoh, E. C. Johnson (2011). Effects of Artesunate alone and in Combination with Folic Acid on the Liver and Serum Iron Level of Male Wistar Rats. Nigerian Journal of Pharmaceutical and Applied Science Research 1(1): 59-65
36. Nkereuwem A. O., Eseyin, O.A., Udobre, S.A., Ebong, A. (2011) Evaluation of antioxidant activity and chemical analysis of the leaf of Telfairia occidentalis. Nigerian Journal of Pharmaceutical and Applied Science Research1(1): 21-28.
37. Ekarika C. Johnson, M. K. Chuodhury, O. A. Eseyin and A. S. Udobre (2011). Pharmacological studies of the bark of Commiphora africana (Bursareceae). International Journal of Pharmacology and Toxicology.
38. Eseyin, O.A., Igboasoiyi, A.C., Igbo, C., Igboasoiyi, A., Dooka, B. (2012). Effects of the leaf extract of Vernonia amygdalina on the pharmacokinetics of Dihydroartemisinin in Rat. Pharmacologia 3(12): 713-718.
39. Udobre, A.S., Usifoh, C.O., Eseyin, O.A., Udoh, A. E., Awofisayo, O. A., Akpan, A. E. (2012).The wound healing activity of methanol extract of the stem bark of Nauclea latifolia. International Journal of Pharmaceutical and Biomedical Science 3(3):136-139.
40. Eseyin, O.A., Ebong, A., Udobre, A., Ekarika J., Udoh, I. (2012). Changes in some pharmacokinetics parameters of Chloroquine by Gnetum africana. Macedonian Journal of Medical Sciences 5(3): 275-279.
43) Asanga, E. E., Ebong, E. P., Eseyin, A. O. , Udoh, E. I., Eyo, A. R. (2013). Effect of Ethanol Extract and Fractions of Nauclea latifolia Leaves on Some Biochemical Parameters of Alloxan-Induced Diabetic Rats. International Journal of Research and Reviews in Pharmacy and Applied Sciences 3(1): 147-154. (Off-shore)
44) Eseyin, O.A, Ebong, A, Akpanabiatu, M, Ufot, U. (2013) Evaluation of the effect of some common Nigerian vegetables on the Pharmacokinetics of Chloroquine and Dihydroartemisinin in rat. Indo-American Journal of Pharmaceutical Research 3(2): 1695-1710.
45) Asanga, E. E., Ebong, E. P., Eseyin, A. O. (2013). Hypoglycaemic effect of ethanolic extract and fractions of Nauclea lafifolia leaf on normal and alloxan induced diabetic rats. International Journal of Biochemistry and Biotechnology 2 (6):457-460.
46) Etim E. I., Essien E.E., Eseyin O.A., Udoh I. E. (2013) Effect of some Artemisinin and Combination Therapy Regimens with and without Concomitant Administration of Phospholipids on the Levels of Plasma Amino transferases and Bilirubin in Nigerian Male Subjects. African Journal of Pharmacology and Therapeutics 2(1):17-25.
47) Asanga E. E., Ebong E. P., Eseyin, A. O. (2013). Hematological parameters of alloxan-induced diabetic rats treated with ethanol extracts and fractions of Nauclea lafiloia leaf. European Scientific Journal 9 (27): 203-210.
49) AhmadA., Sattar M. Z. A., RathoreH. A., Fatima T., Akhtar S.K.., Afzal S., Lazhari M., Ahmed and Eseyin O. (2013). Pharmacological importance of Nardostachysjatamansi DC: Journal of Chemical and Pharmaceutical Research, 2013, 5(10):431-438(Off-shore).
50) Asanga E., Ebong P., Eseyin O., Udoh I., Eyo R., Effiong G.(2013). Lipid Profile of Alloxan-Induced Diabetic Albino Wistar Rats Treated with Ethanol Whole Extract and Fractions of Nauclea latifolia Leaves. ARPN Journal of Science and Technology, 3 (10): 1009-1013.
51) Eseyin O. A., Sattar M. A., Rathore H. A., Ahmad A., Afzal S., Lazhari M., Ahmad F.and Akhtar S.(2014). Hypoglycemic Potential of Polysaccharides of the Leaf Extract of Telfairia occidentalis. Annual Research and Review in Biology 4(11): 1813-1826
52) Eseyin O. A., Sattar M. A., Rathore H. A. (2014). Review of the pharmacological activity of Telfairia occidentalis. Tropical Journal of Pharmaceutical Research. 13 (10): 1761-1769
53) Eseyin O. A., Etiemmana G. C., Enobong M., Ebong A., Iweh E., Udobre S.A., Johnson E., Attih E.and Effiong A.(2015). Evaluation of the antioxidant properties of some commonly eaten vegetables in Akwa Ibom state of Nigeria. Annual Research and Review in Biology, 5(2): 165-173
55) Attih E., Usifoh C., Ambe D.A. and Eseyin O. A. (2015). Quantitative Titrimetric and Spectrophotometric determination of Dihydroartemisinin based on the redox reaction with cerium ammonium sulphate. Journal of Chemical and Pharmaceutical Research 7(6):732-738
57) Asanga Edet E., Eseyin Olorunfemi A, Ekanem Aniebiet N, Amaechi Dennis (2016). Changes in serum zinc, magnesium and copper in sickle cell patients: A case study in Jos, Nigeria. World J Pharm Sci; 4(5): 195-199
58) E. C Johnson, M. Ilyas, M. I. Sule, O. A. Eseyin and H. O. Oladimeji (2016). Antimicrobial activity of compounds isolated from the leaves of Aspilia africana (Pers.) C. D. Adams (Asteraceae). African Journal of Pharmacology and Therapeutics 5(3): 149-154.
59) Ekarika Johnson, Mohammed Ilyas, Olorunfemi Eseyin, Emmanuel Etim, Edidiong Edem (2016). Isolation, Characterization and Anti-diabetic Potential of Oleanolic acid from leaf of Aspilia africana (Pers) C.D Adams (Asteraceae). Journal of Pharmaceutical and Medicinal Research 2(2):62–65.

• Founder, Diabetes Research Group, University of Uyo
• Technical Editor, Asian Journal of Biochemistry
• Technical Editor, International Journal of Pharmacology
• Technical Editor, Journal of Pharmacology and Toxicology
• Technical Editor, Research Journal of Medicinal Plant
• Technical Editor, American Journal of Biochemistry and Molecular Biology
• Editor, The Internet Journal of Podiatry
• Editor, Pharmacologia
• Reviewer to many journals such as: Macedonian Journal of Medical Sciences,
Journal of Medicinal Plant Research etc